<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible = true"
            >添加角色</el-button
          >
        </el-col>
      </el-row>

      <!-- 角色列表区域 -->
      <el-table :data="roleList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['bdbotton',i1 === 0 ? 'bdtop' : '','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
              <!-- 渲染一级权限 -->
              <el-col :span='5'>
                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级权限 -->
              <el-col :span='19'>
                <!-- 通过for循环嵌套渲染二级权限 -->
                <el-row :class="[i2 === 0 ? '' : 'bdtop' ,'vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                  <el-col :span='6'>
                    <el-tag type='success' closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span='18'>
                    <el-tag type='warning' :class="[i3 === 0 ? '' : 'bdtop']" v-for="(item3,i3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">
                      {{item3.authName}}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="350px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit">编辑</el-button>
            <el-button type="danger" icon="el-icon-delete">删除</el-button>
            <el-button type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
       <el-pagination
      :page-sizes="[6, 8, 10, 12]"
      :page-size="2"
      layout="total, sizes, prev, pager, next, jumper"
      :total="addForm.totle">
    </el-pagination>
    </el-card>
    <!-- 添加角色的对话框 -->
    <el-dialog title="添加角色" :visible.sync="addDialogVisible" width="50%" @close="addClosed">
      <!-- 内容主体区 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
      </el-form>
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
      >
        <el-form-item label="角色描述" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
      </el-form>
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
      >
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
      </el-form>
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
      >
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      
      <span slot="footer" class="dialog-footer">
        <!-- 底部按钮区 -->
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser"
          >确 定</el-button
        >
      </span>
    </el-dialog>
    <!-- 分配权限的对话框 -->
    <el-dialog
  title="分配权限"
  :visible.sync="setRightDialogVisible"
  width="50%" @close="setRightDialogClosed">
  <!-- 树形控件 -->
  <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key='id' default-expand-all :default-checked-keys='defkeys' ref="treeRef"></el-tree>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的自定义规则
    var checkEmail = (rule,value,callback) => {
      
      const regEmail = /^([a-zA-Z]|[0-9])(\w|\-)+@[a-zA-Z0-9]+\.([a-zA-Z]{2,4})$/
      if(regEmail.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法的邮箱'))
    }
    // 验证手机号的自定义规则
    var checkMobile = (rule,value,callback) => {
      const regMobile = /(^1\d{10}$)|(^[0-9]\d{7}$)/
      if(regMobile.test(value)) {
        return callback()
      }
      callback(new Error('请输入正确的手机号'))
    }
    return {
      // 所有角色的列表
      roleList: [],
      // 控制添加角色的对话框的显示与隐藏
      addDialogVisible: false,
      // 添加角色的表单数据
      addForm: {},
      // 控制分配权限对话框的显示与隐藏
      setRightDialogVisible : false,
      // 所有权限的数据
      rightslist : [],
      // 树形控件的属性绑定对象
      treeProps : {
        label : 'authName',
        children : 'children'
      },
      // 默认选中的节点ID值数组
      defkeys : [],
      // 当前即将分配权限的id
      roleId : '',
      // 添加角色的规则验证
      addFormRules: {
        roleName: [
          {
            required: true,
            message: "请输入用户名",
            trigger: "blur",
          },
          {
            min: 3,
            max: 10,
            message: "长度在 3 到 10 个字符",
            trigger: "blur",
          },
        ],
        password: [
          {
            required: true,
            message: "请输入密码",
            trigger: "blur",
          },
          {
            min: 3,
            max: 10,
            message: "长度在 3 到 10 个字符",
            trigger: "blur",
          },
        ],
        email: [
          {
            required: true,
            message: "请输入邮箱",
            trigger: "blur",
          },{
            validator : checkEmail,
            trigger : "blur"
          }
        ],
        mobile: [
          {
            required: true,
            message: "请输入手机号",
            trigger: "blur",
          },{
            validator : checkMobile,
            trigger : "blur"
          }
        ],
      },
    };
  },
  created() {
    this.getRoleList();
  },
  methods: {
    async getRoleList() {
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status != 200) {
        return this.$message.error("获取角色列表失败");
      }
      this.roleList = res.data;
    },
    // 监听添加角色对话框的关闭事件
    addClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击确定按钮的预验证
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        // console.log(valid);
        if(!valid) return 
        // 通过预验证则发起网络请求
        const {data : res} = await this.$http.post('roles',roleName)
        if(res.meta.status !== 201) return this.$message.error('添加角色失败')

      })
      this.$message.success('添加用户成功');
      this.addDialogVisible = false;
      this.getRoleList();
    },
    // 根据id删除对应的权限
    async removeRightById(role,rightId){
      //  弹窗提示用户是否要删除
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)

        if(confirmResult !== 'confirm') {
          return this.$message.info('取消了删除')
        }
        const {data : res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
        if(res.meta.status !== 200) {
          return this.$message.error('删除权限失败！')
        }
        role.children = res.data
    },
    // 展示分配权限的对话框
    async showSetRightDialog(role) {
      this.roleId = role.id
      // 获取所有权限的数据
      const {data : res} = await this.$http.get('rights/tree')
      if(res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败')
      }
      
      this.rightslist = res.data
      // 递归获取三级节点的ID
      this.getLeafKeys(role,this.defkeys)
      // console.log(this.rightslist);
      this.setRightDialogVisible = true
    },
    // 通过递归的形式 获取角色下所有的三级权限的ID 并保存到 defkeys 数组中
    getLeafKeys(node,arr) {
      // 如果当前node节点不包含children属性 则是三级节点
      if(!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => this.getLeafKeys(item,arr))
    },
    // 监听分配权限对话框的关闭事件
    setRightDialogClosed() {
      this.defkeys = []
    },
    // 点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys(),
      ]
      // console.log(keys);
      const idStr = keys.join(',')
      const {data : res} = await this.$http.post(`roles/${this.roleId}/rights`,{rids : idStr})
      if(res.meta.status !== 200) {
        return this.$message.error('分配权限失败')
      }
      this.$message.success('分配权限成功')
      this.getRoleList()
      this.setRightDialogVisible = false
    }
  },
};
</script>

<style scoped>
/* .el-row {
  padding-bottom: 15px;
} */
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbotton {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
